“The people that were on the crazy side, they’ve kind of been sent off to the frontier,” Tony Evers, Wisconsin’s Democratic governor, told Semafor this week. “If you’re denying the last election or any election, I think that balloon has been popped.” Even so, it’s no great gift to the country as a whole that candidates ran for two years on suspicion about normal election practices or advancing conspiracy theories, which people heard and internalized — a more intangible result with effects harder to measure. Since Mr. Trump’s announcement for president, as you have also heard by now, he’s repeatedly...